Band 6.0 IELTS Writing Task 1 Model Answer

Overall Band Score: 6.0 · Cambridge IELTS 19 · 2026-11-06

IELTS Writing Task 1 question

 

The diagram below shows how a biofuel called ethanol is produced.

Summarise the information by selecting and reporting the main features, and make comparisons where relevant.

Student answer (Band 6.0)

The process diagram illustrates the process of creating a biofuel called ethanol.

Overall, it is the cycle in which carbon dioxide is released and then absorbed again. It has eight steps, begining with growth of plants and trees using sunlight and carbon dioxide and ending with ethonal which used in cars , trucks and aeroplanes which release carbon dioxide into the air and used in again for planting.

Initially, the plants and trees are grown with the help of sunlight and carbon dioxide.Once they matured ,they are harvested.The harvested plants and trees are being preprocessing , which are subequently converted into cellulose. After this, there is some further processing on cellulose before making the sugar.

In the next step, microbes are added into the sugar which created the ethonol. The ethanol is being used in dfferent vehicles such as cars, trucks and aeroplanes which produced the carbon dioxide into the air. That carbon dioxide again used in growth of plants and trees which caused to regenerate the ethanol.

AI examiner evaluation

Task Achievement / Task Response: Band 6.5

You identify the diagram as a cyclical process and give a clear overview of carbon dioxide being released and then absorbed again. The main sequence is also covered, from plant growth and harvesting through cellulose, sugars, microbes and ethanol, and you correctly mention its use in three forms of transport. This gives the response a relevant account of the process. However, the overview says there are “eight steps,” which does not clearly match the stages shown, and some details are compressed or unclear: for example, the diagram shows microbes added to sugars before ethanol is produced, while the final carbon dioxide returns to support plant growth. To strengthen the summary, describe the stages more precisely and avoid an unsupported step count.

Coherence and Cohesion: Band 6.5

The response has a sensible overall structure: an introduction and overview are followed by the early stages and then the later stages of the cycle. Sequencing expressions such as “Initially,” “After this,” and “In the next step” help the reader follow the process. The circular relationship is also brought back at the end, giving the account a degree of closure. Some links are less clear or mechanical, however. The long overview sentence joins several stages together, and “which are subsequently converted” has an unclear reference. The final sentence repeats the carbon-dioxide cycle without a clean connection to the preceding information. Use shorter stage-focused sentences and clearer references to each material or output to make progression more precise.

Lexical Resource: Band 5.5

You use relevant process vocabulary, including “harvested,” “cellulose,” “microbes,” and “regenerate,” and the reader can generally understand the stages being described. However, several spelling and word-choice errors are noticeable, including “begining,” “ethonal/ethonol,” “subequently,” and “dfferent.” Some phrases are also imprecise or unnatural, such as “creating a biofuel,” “being preprocessing,” and “produced the carbon dioxide.” These choices limit precision when describing a technical process. Aim to use accurate forms of the key terms consistently and choose standard process collocations, such as “is pre-processed,” “is converted into,” and “releases carbon dioxide.”

Grammatical Range and Accuracy: Band 5.5

There is an attempt to use both simple and more complex sentences, including a relative clause in “which are subsequently converted into cellulose” and a passive construction in “microbes are added.” The overall meaning remains understandable, but some errors in verb forms, agreement, articles and punctuation reduce accuracy. For example, “It has eight steps, begining” needs a correctly formed participle, while “ethanol which used” is missing an auxiliary verb. “Once they matured, they are harvested” shifts tense, and “That carbon dioxide again used” also lacks a verb. Commas are sometimes followed by no space, and there are stray spaces before punctuation. Check each sentence for a complete verb phrase and keep the process description consistently in the present passive.

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